Duct sizer Application

HVAC or heating ventilation and air conditioning is a field of building services engineering that is involved in the design of building environmental conditioning whether for cooling or heating depending on the time of year and the surrounding environment. The cooling and heating process is carried out through a thermal transfer process between a refrigerant and a fluid (water or air). To transfer a thermal load from or to an occupancy, the cooled fluid is transferred though a system of ducts. Ducts can have different shapes (circular or rectangular) and they are sized based on the flow of the fluid transferred and the expected pressure loss.

The following Visual basic application is a light tool that can be used by all engineers to size rectangular HVAC ducts for commercial and residential buildings.